Sadiq Khan is a 'ridiculous character,' and is seen as a failure as London mayor: Steve Hilton

Fox News host Steve Hilton labeled Sadiq Khan a "ridiculous character" Tuesday in response to the London mayor's war of words with President Trump.

The president doubled down on his criticisms of Khan during a press conference in London alongside outgoing British Prime Minister Theresa May.

"He's done a poor job, crime is up, a lot of problems," Trump reasserted on Tuesday.

The two politicians have traded jabs over Twitter throughout the duration of Trump's U.K. visit, with Trump labeling the mayor as a "stone cold loser" as he arrived in London. Khan responded by telling BBC that the president's insults reminded him of "the sort of thing an 11-year-old would do."